1 // SPDX-License-Identifier: GPL-2.0+
3  * Support for ON Semiconductor NOA1305 ambient light sensor
45 #define NOA1305_DRIVER_NAME	"noa1305"
79 	ret = regmap_bulk_read(priv->regmap, NOA1305_REG_ALS_DATA_LSB, &data,  in noa1305_measure()
94 	ret = regmap_read(priv->regmap, NOA1305_REG_INTEGRATION_TIME, &data);  in noa1305_scale()
116 	ret = regmap_read(priv->regmap, NOA1305_REG_INTEGRATION_TIME, &data);  in noa1305_int_time()
143 	if (chan->type != IIO_LIGHT)  in noa1305_read_avail()
144 		return -EINVAL;  in noa1305_read_avail()
158 		return -EINVAL;  in noa1305_read_avail()
168 	if (chan->type != IIO_LIGHT)  in noa1305_read_raw()
169 		return -EINVAL;  in noa1305_read_raw()
179 		return -EINVAL;  in noa1305_read_raw()
190 	if (chan->type != IIO_LIGHT)  in noa1305_write_raw()
191 		return -EINVAL;  in noa1305_write_raw()
194 		return -EINVAL;  in noa1305_write_raw()
197 		return -EINVAL;  in noa1305_write_raw()
202 			return regmap_write(priv->regmap, NOA1305_REG_INTEGRATION_TIME, i);  in noa1305_write_raw()
204 	return -EINVAL;  in noa1305_write_raw()
245 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*priv));  in noa1305_probe()
247 		return -ENOMEM;  in noa1305_probe()
251 		dev_err(&client->dev, "Regmap initialization failed.\n");  in noa1305_probe()
257 	ret = devm_regulator_get_enable(&client->dev, "vin");  in noa1305_probe()
259 		return dev_err_probe(&client->dev, ret,  in noa1305_probe()
263 	priv->client = client;  in noa1305_probe()
264 	priv->regmap = regmap;  in noa1305_probe()
268 		dev_err(&client->dev, "ID reading failed: %d\n", ret);  in noa1305_probe()
274 		dev_err(&client->dev, "Unknown device ID: 0x%x\n", dev_id);  in noa1305_probe()
275 		return -ENODEV;  in noa1305_probe()
281 		dev_err(&client->dev, "Enabling power control failed\n");  in noa1305_probe()
287 		dev_err(&client->dev, "Device reset failed\n");  in noa1305_probe()
294 		dev_err(&client->dev, "Setting integration time failed\n");  in noa1305_probe()
298 	indio_dev->info = &noa1305_info;  in noa1305_probe()
299 	indio_dev->channels = noa1305_channels;  in noa1305_probe()
300 	indio_dev->num_channels = ARRAY_SIZE(noa1305_channels);  in noa1305_probe()
301 	indio_dev->name = NOA1305_DRIVER_NAME;  in noa1305_probe()
302 	indio_dev->modes = INDIO_DIRECT_MODE;  in noa1305_probe()
304 	ret = devm_iio_device_register(&client->dev, indio_dev);  in noa1305_probe()
306 		dev_err(&client->dev, "registering device failed\n");  in noa1305_probe()
312 	{ .compatible = "onnn,noa1305" },
318 	{ "noa1305" },
336 MODULE_DESCRIPTION("ON Semiconductor NOA1305 ambient light sensor");